Initstack (&s) DestroyStack(&s) StackLength(s StackEmpty(s) GetTop(s, &e) Clear Stack(&s) Push(&s,e) Pop(&s, &e) StackTravers(s, visito)InitStack(&S) DestroyStack(&S) ClearStack(&S) StackEmpty(s) StackLength(S) GetTop(S, &e) Push(&S, e) Pop(&S, &e) StackTravers(S, visit())